444535409 has 2 divisors, whose sum is σ = 444535410. Its totient is φ = 444535408.

The previous prime is 444535387. The next prime is 444535451. The reversal of 444535409 is 904535444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293368384 + 151167025 = 17128^2 + 12295^2 .

It is a cyclic number.

It is not a de Polignac number, because 444535409 - 2¹⁶ = 444469873 is a prime.

It is a super-2 number, since 2×444535409² = 395223459709594562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (444535109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222267704 + 222267705.

It is an arithmetic number, because the mean of its divisors is an integer number (222267705).

Almost surely, 2^444535409 is an apocalyptic number.

It is an amenable number.

444535409 is a deficient number, since it is larger than the sum of its proper divisors (1).

444535409 is an equidigital number, since it uses as much as digits as its factorization.

444535409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 444535409 is about 21084.0083712751. The cubic root of 444535409 is about 763.1948890284.

The spelling of 444535409 in words is "four hundred forty-four million, five hundred thirty-five thousand, four hundred nine".